Light source module and projection apparatus

Abstract

A light source module and a projection apparatus are provided. The light source module includes a first light-emitting device, a wavelength conversion device, a second light-emitting device and a light combination device. The first light-emitting device emits an exciting beam. The wavelength conversion device is disposed on a transmission path of the exciting beam, and converts the exciting beam into a first color beam. The wavelength conversion device is suitable for moving, so that the exciting beam illuminates into different positions of the wavelength conversion device at different time. The second light-emitting device emits a second color beam. Colors of the first color beam and the second color beam are different. The light combination device is disposed on transmission paths of the first color beam and the second color beam, and combines the first color beam and the second color beam.

What is claimed is: 
     
       1. A light source module, comprising:
 a first light-emitting device, emitting an exciting beam; 
 a wavelength conversion device, disposed on a transmission path of the exciting beam, converting the exciting beam into a first color beam; 
 a second light-emitting device, emitting a second color beam, wherein colors of the first color beam and the second color beam are different; and 
 a light combination device, disposed on transmission paths of the first color beam and the second color beam, and combining the first color beam and the second color beam, 
 wherein the wavelength conversion device comprises:
 a reflection mirror; and 
 a phosphor layer, disposed on the reflection mirror for converting the exciting beam into the first color beam, wherein the wavelength conversion device moves back and forth along a linear direction, so that the exciting beam illuminates into different positions of the phosphor layer of the wavelength conversion device at different time for avoiding a heat accumulation of the phosphor layer and improving a conversion efficiency of the phosphor layer, and the wavelength conversion device propagates the first color beam to the light combination device, the second color beam emitted from the second light-emitting device transmits to the light combination device without passing through any phosphor layers. 
 
 
     
     
       2. The light source module as claimed in  claim 1 , further comprising a third light-emitting device emitting a third color beam, wherein colors of the third color beam, the first color beam and the second color beam are mutually different, and the light combination device is disposed on a transmission path of the third color beam and combines the first color beam, the second color beam and the third color beam. 
     
     
       3. The light source module as claimed in  claim 2 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the first color beam and the second color beam, wherein the first dichroic unit reflects one of the first color beam and the second color beam, and transmits another one of the first color beam and the second color beam, and the first dichroic unit combines the first color beam and the second color beam; and 
 a second dichroic unit, disposed on the transmission path of the third color beam, and disposed on the combined transmission path of the first color beam and the second color beam, wherein the second dichroic unit reflects the third color beam and transmits the first color beam and the second color beam, or the second dichroic unit reflects the first color beam and the second color beam and transmits the third color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       4. The light source module as claimed in  claim 2 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the second color beam and the third color beam, wherein the first dichroic unit reflects one of the second color beam and the third color beam, and transmits another one of the second color beam and the third color beam, and the first dichroic unit combines the second color beam and the third color beam; and 
 a second dichroic unit, disposed on the transmission path of the first color beam, and disposed on the combined transmission path of the second color beam and the third color beam, wherein the second dichroic unit reflects the first color beam and transmits the second color beam and the third color beam, or the second dichroic unit reflects the second color beam and the third color beam and transmits the first color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       5. The light source module as claimed in  claim 2 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the first color beam, the second color beam and the third color beam, wherein the first dichroic unit reflects one of the first color beam and the second color beam, and transmits another one of the first color beam and the second color beam; and 
 a second dichroic unit, intersected to the first dichroic unit, and disposed on the transmission paths of the first color beam, the second color beam and the third color beam, wherein the second dichroic unit reflects the third color beam and transmits the first color beam and the second color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       6. The light source module as claimed in  claim 1 , further comprising a third dichroic unit disposed on the transmission path of the exciting beam between the first light-emitting device and the wavelength conversion device, and located on the transmission path of the first color beam between the wavelength conversion device and the light combination device, wherein the third dichroic unit propagates the exciting beam to the wavelength conversion device, and transmits the first color beam to the light combination device. 
     
     
       7. The light source module as claimed in  claim 1 , wherein a wavelength range of the exciting beam is more than or equal to 200 nm and less than or equal to 490 nm. 
     
     
       8. The light source module as claimed in  claim 1 , wherein a wavelength range of the first color beam is more than or equal to 500 nm and less than or equal to 550 nm. 
     
     
       9. A projection apparatus, comprising:
 a light source module, comprising: 
 a first light-emitting device, emitting an exciting beam; 
 a wavelength conversion device, disposed on a transmission path of the exciting beam, converting the exciting beam into a first color beam; 
 a second light-emitting device, emitting a second color beam, wherein colors of the first color beam and the second color beam are different; and 
 a light combination device, disposed on transmission paths of the first color beam and the second color beam, and combining the first color beam and the second color beam; and 
 a light valve, disposed on the transmission paths of the first color beam and the second color beam, 
 wherein the wavelength conversion device comprises:
 a reflection mirror; and 
 a phosphor layer, disposed on the reflection mirror for converting the exciting beam into the first color beam, wherein the wavelength conversion device moves back and forth along a linear direction, so that the exciting beam illuminates into different positions of the phosphor layer of the wavelength conversion device at different time for avoiding a heat accumulation of the phosphor layer and improving a conversion efficiency of the phosphor layer, and the wavelength conversion device propagates the first color beam to the light combination device, the second color beam emitted from the second light-emitting device transmits to the light combination device without passing through any phosphor layers. 
 
 
     
     
       10. The projection apparatus as claimed in  claim 9 , further comprising a third light-emitting device emitting a third color beam, wherein colors of the third color beam, the first color beam and the second color beam are mutually different, and the light combination device is disposed on a transmission path of the third color beam and combines the first color beam, the second color beam and the third color beam, and the light valve is used for converting the first color beam, the second color beam and the third color beam into an image beam. 
     
     
       11. The projection apparatus as claimed in  claim 10 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the first color beam and the second color beam, wherein the first dichroic unit reflects one of the first color beam and the second color beam, and transmits another one of the first color beam and the second color beam, and the first dichroic unit combines the first color beam and the second color beam; and 
 a second dichroic unit, disposed on the transmission path of the third color beam, and disposed on the combined transmission paths of the first color beam and the second color beam, wherein the second dichroic unit reflects the third color beam and transmits the first color beam and the second color beam, or the second dichroic unit reflects the first color beam and the second color beam and transmits the third color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       12. The projection apparatus as claimed in  claim 10 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the second color beam and the third color beam, wherein the first dichroic unit reflects one of the second color beam and the third color beam, and transmits another one of the second color beam and the third color beam, and the first dichroic unit combines the second color beam and the third color beam; and 
 a second dichroic unit, disposed on the transmission path of the first color beam, and disposed on the combined transmission paths of the second color beam and the third color beam, wherein the second dichroic unit reflects the first color beam and transmits the second color beam and the third color beam, or the second dichroic unit reflects the second color beam and the third color beam and transmits the first color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       13. The projection apparatus as claimed in  claim 10 , wherein the light combination device comprises:
 a first dichroic unit, disposed on the transmission paths of the first color beam, the second color beam and the third color beam, wherein the first dichroic unit reflects one of the first color beam and the second color beam, and transmits another one of the first color beam and the second color beam; and 
 a second dichroic unit, intersected to the first dichroic unit, and disposed on the transmission paths of the first color beam, the second color beam and the third color beam, wherein the second dichroic unit reflects the third color beam and transmits the first color beam and the second color beam, so as to combine the first color beam, the second color beam and the third color beam. 
 
     
     
       14. The projection apparatus as claimed in  claim 9 , further comprises a third dichroic unit disposed on the transmission path of the exciting beam between the first light-emitting device and the wavelength conversion device, and located on the transmission path of the first color beam between the wavelength conversion device and the light combination device, wherein the third dichroic unit propagates the exciting beam to the wavelength conversion device, and transmits the first color beam to the light combination device. 
     
     
       15. The projection apparatus as claimed in  claim 9 , wherein a wavelength range of the exciting beam is more than or equal to 200 nm and less than or equal to 490 nm. 
     
     
       16. The projection apparatus as claimed in  claim 9 , wherein a wavelength range of the first color beam is more than or equal to 500 nm and less than or equal to 550 nm.